?????????????????? ??? ?????????????? ????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????? ???????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????????????? ???????????????????
4 สัญญาณเตือนของตลับลูกปืนที่ใกล้ชำรุดหรือหมดสภาพการใช้งาน
????????????????????????????????????????????????????????????????????????????????? (Bearing) ??? ?????????????????????????????????????? ????????????? ??????? ?????? ???? ??????? ?????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????? ??????????????????????????